Home / 3,928.79-5,889.54-1,329.91

Finding the Fourth Proportional to 3,928.79, 5,889.54 and 1,329.91

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Solution

The fourth proportional to 3,928.79, 5,889.54 and 1,329.91 is: 1,993.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.79 : 5,889.54 = 1,329.91 : x
  2. Step 2: Convert to fraction form
    3,928.79/5,889.54 = 1,329.91/x
  3. Step 3: Cross multiply
    3,928.79x = 5,889.54 × 1,329.91
  4. Step 4: Simplify right side
    3,928.79x = 7,832,558.14
  5. Step 5: Solve for x
    x = 7,832,558.14/3,928.79
  6. Step 6: Final answer
    x = 1,993.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.